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Finding the Fourth Proportional to 88,022.70, 132,034.05 and 78,000.30

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Solution

The fourth proportional to 88,022.70, 132,034.05 and 78,000.30 is: 117,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,022.70 : 132,034.05 = 78,000.30 : x
  2. Step 2: Convert to fraction form
    88,022.70/132,034.05 = 78,000.30/x
  3. Step 3: Cross multiply
    88,022.70x = 132,034.05 × 78,000.30
  4. Step 4: Simplify right side
    88,022.70x = 10,298,695,510.22
  5. Step 5: Solve for x
    x = 10,298,695,510.22/88,022.70
  6. Step 6: Final answer
    x = 117,000.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.